dequeue
To remove the first entry in a queue and to attempt the function for which the entry was queued.
DNS
Domain Name System. An Internet naming system that maps, or translates, domain names to addresses. See domain names.
domain names
Internet. The domain name consists of a sequence of subnames separated by a period. The individual sections of the name might represent sites, groups, or computers, but the domain system simply calls each section a label.
For example, the domain name super.dec.com, contains three labels: super, dec, and com. Any suffix of labels in a domain name is called a domain. Thus, the lowest level domain is super.dec.com, an abbreviation for the computer named super. The second level domain is dec.com (for Digital Equipment Corporation); and the top level domain is com (for commercial institution). As the example shows, domain names are written with the most local label first and the topmost domain last.
Domain Name System
See DNS.
downline loading
The process of sending the access server image from a load host to a access server.
DSR
Data Set Ready. A control signal that is used to inform whether or not a communications device is ready to transmit and receive data.
DSVCONFIG
The configuration procedure used on a load host to configure the load host’s node database.
DTR
Data Terminal Ready. A control signal that is used to inform whether or not a data terminal is ready to transmit and receive data.
dump file
A file containing a copy of the access server memory. The load host creates this file when it receives an upline dump from the access server. The file is stored on the load host in the access server directory.
Ethernet
Atype of local area network based on